<template>
	<view>
		<!-- 搜索框 -->
		<my-search @myclick="gotoSearch" :bgcolor="'pink'" :radius="15"></my-search>
		<view class="scroll-view-container">
			<scroll-view class="left-scroll-view" scroll-y='true' :style="{height: wh+'px'}">
				<block v-for="(item,i) in cateList" :key="i">
					<view :class="['left-scroll-view-item',i===active?'active':'']" @click="activeChanged(i)">
						{{item.cat_name}}
					</view>
				</block>
			</scroll-view>
			<!-- 右侧滑动区域 -->
			<scroll-view class="right-scroll-view" scroll-y='true' :style="{height: wh+'px'}" :scroll-top="scrollTop">
				<!-- 二级分类列表 -->
				<view class="cate-lv2"  v-for="(item2,i2) in cateLevel2" :key="i2">
					<!-- 二级分类标题 -->
					<view class="cate-lv2-title">
						/{{item2.cat_name}}/
					</view>
					<!-- 三级分类列表 -->
					<view class="cate-lv3-list">
						<view @click="gotoGoodsList(item3)" class="cate-lv3-item"  v-for="(item3,i3) in item2.children" :key="i3">
							<image :src="item3.cat_icon"></image>
							<text>{{item3.cat_name}}</text>
						</view>
					</view>
				</view>
			</scroll-view>
		</view>
	</view>
</template>

<script>
	import badgeMix from "@/mixins/tabbar-badge.js"
	export default {
		mixins:[badgeMix],
		data() {
			return {
				wh: 0,
				cateList: [],
				active: 0,
				cateLevel2: [],
				scrollTop:0
			};
		},
		onLoad() {
			const data = uni.getSystemInfoSync();
			// console.log(data);
			this.wh = data.windowHeight-50
			this.getCateList()
		},
		methods: {
		 async getCateList() {
				const {
					data: res
				} = await uni.$http.get('/api/public/v1/categories')
				console.log(res);
				if (res.meta.status !== 200) {
					return uni.$showMsg()
				}
				this.cateList = res.message
				this.cateLevel2 = res.message[0].children
			},
			activeChanged(i) {
				this.active = i
				this.cateLevel2 = this.cateList[i].children
				this.scrollTop=this.scrollTop===0?1:0
			},
			//跳转到商品页面
			gotoGoodsList(item){
				uni.navigateTo({
					url:"/subpkg/goods_list/goods_list?cid="+item.cat_id
				})
			},
			gotoSearch(){
				uni.navigateTo({
					url:"/subpkg/search/search"
				})
			}

		}
	}
</script>

<style lang="scss">
	.scroll-view-container {
		display: flex;

		.left-scroll-view {
			width: 120px;

			.left-scroll-view-item {
				background-color: #F7F7F7;
				line-height: 60px;
				text-align: center;
				font-size: 12px;

				&.active {
					background-color: #FFFFFF;
					position: relative;

					&::before {
						content: ' ';
						display: block;
						width: 3px;
						height: 30px;
						background-color: #C00000;
						position: absolute;
						left: 0;
						top: 50%;
						transform: translateY(-50%);
					}
				}

			}
		}

	}

	.cate-lv2-title {
		font-size: 12px;
		font-weight: blod;
		text-align: center;
		padding: 15px 0;
	}
	.cate-lv3-list{
		display: flex;
		flex-wrap: wrap;
		.cate-lv3-item{
			width: 33.33%;
			display: flex;
				flex-direction: column;
				justify-content: center;
				align-items: center;
				margin-bottom: 10px;
			image{
				width: 60px;
				height: 60px;
			}
			text{
				font-size: 12px;
			}
		}
	}
</style>
